A multilevel obesity prevention trial for American Indian communities

INTERVENTION: The 14‐month, six phase multi‐level, multi‐component obesity intervention administered by local trained field staff within food stores, schools, and worksites in five AI communities (three randomly allocated to receive the intervention immediately, two randomly allocated to receive the intervention delayed or after completion in the immediate communities). Intervention content aimed to change the food‐purchasing environment, improve nutritional intake, and increase PA among community members. Intervention materials and activities included posters, brochures, flyers, newsletters, radio announcements, a school curriculum, giveaways, cooking demos, and taste tests. Outcomes were measured at follow‐up in the fall of 2013 and spring of 2014, which was 14‐18 months after baseline data collection in summer 2011. CONDITION: Obesity ; Nutritional, Metabolic, Endocrine ; Obesity PRIMARY OUTCOME: 1. Dietary quality and nutrient intake (fruit and vegetable servings, total energy, total fat), measured using brief FFQ and 24‐hr recall at baseline (summer 2011) and follow‐up (fall 2013 and spring 2014); 2. Physical activity (total PA, time spent sedentary), measured using IPAQ at baseline (summer 2011) and follow‐up (fall 2013 and spring 2014); SECONDARY OUTCOME: 1. Anthropometric measures (BMI, waist circumference, % body fat) measured at baseline (summer 2011) and follow‐up (fall 2013 and spring 2014); 2. Psychosocial variables, measured using Adult Impact Questionnaire developed based on formative work within the five communities, at baseline (summer 2011) and follow‐up (fall 2013 and spring 2014) INCLUSION CRITERIA: 1. Between the ages of 18 and 65 years old 2. Living within the community for at least 30 days 3. Tribal member 4. Primary food shopper or preparer for the household